3221012222100 has 54 divisors (see below), whose sum is σ = 10096083867870. Its totient is φ = 858936592320.

The previous prime is 3221012222089. The next prime is 3221012222167. The reversal of 3221012222100 is 12222101223.

3221012222100 is a `hidden beast` number, since 322 + 1 + 0 + 122 + 221 + 0 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 384442161156 + 2836570060944 = 620034^2 + 1684212^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1789450335 + ... + 1789452134.

Almost surely, 2^{3221012222100} is an apocalyptic number.

3221012222100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3221012222100 is an abundant number, since it is smaller than the sum of its proper divisors (6875071645770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3221012222100 is a wasteful number, since it uses less digits than its factorization.

3221012222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578902489 (or 3578902479 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 3221012222100 its reverse (12222101223), we get a palindrome (3233234323323).

The spelling of 3221012222100 in words is "three trillion, two hundred twenty-one billion, twelve million, two hundred twenty-two thousand, one hundred".